Question

当我运行我的Hibernate应用程序时，它会显示流动错误：

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.hibernate.exception.JDBCConnectionException: Cannot open connection
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)
    at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:420)
    at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
    at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:119)
    at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:57)
    at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1326)
    at com.jwt.hibernate.SimpleTest.main(SimpleTest.java:23)
Caused by: java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/javawebtutor
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
    at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:417)
    ... 5 more

我想提一下mySQL服务器版本是5.5和连接器：mysql-connector-java-5.1.20-bin.jar 这是我的hibernate应用程序配置文件名为：hibernate.cfg.xml

    <!-- language: lang-xml -->

        <?xml version="1.0" encoding="utf-8"?>
        <!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

        <hibernate-configuration>
            <session-factory>
                <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
                <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/javawebtutor</property>
                <property name="hibernate.connection.username">root</property>
                <property name="hibernate.connection.password">root</property>
                <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
                <property name="show_sql">true</property>
                <property name="format_sql">true</property>
                <property name="hbm2ddl.auto">create </property>
                <mapping resource="com/jwt/hibernate/student.hbm.xml" />
            </session-factory>
        </hibernate-configuration>

指导我问题在哪里。有关连接器版本或MySQL版本不匹配的问题??

Answer 1

您使用的是什么IDE？尝试将其添加到您的类路径，然后进行部署。如果是网络应用，请尝试添加到WEB-INF/lib 如果是maven app，请将代码段放在pom.xml

中

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.34</version>
</dependency>

Hibernate错误：java.sql.SQLException：没有为jdbc找到合适的驱动程序：mysql：// localhost：3306 / databasename

1 个答案: